/*
 * Copyright 2018 StreamSets Inc.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package com.streamsets.pipeline.api;

/**
 * Field batch is used by {@FieldProcessor} to transform individual fields rather than whole records.
 *
 * Unlike {@Batch} the API uses cursor style API so that the caller can immediately specify what action should happen
 * for each field inside the iteration.
 */
public interface FieldBatch extends FieldOperator {

  /**
   * Move the cursor to next field.
   *
   * @return True if there is a next field, false otherwise.
   */
  public boolean next();

  /**
  * @return True if there is a next field, false otherwise.
  */
  public boolean hasNext();
}